diff --git a/themes/cetcat/static/css/main.css b/themes/cetcat/static/css/main.css
index 91a6cf3448..cdbbaad0b7 100644
--- a/themes/cetcat/static/css/main.css
+++ b/themes/cetcat/static/css/main.css
@@ -189,7 +189,7 @@ pre{
 	}
 	.hentry .article-info .entry-title a{
 		text-decoration: none;
-	}
+	8}
 	/* ascii art styling */
 	.hentry pre{
 		font-size: 14.4px;
@@ -272,4 +272,9 @@ pre{
 	display: none;
 }
 
-
+/* add a monochrome filter over past events */
+.past-event{
+	filter:opacity(0.1);
+	/*filter: url("/images/filter.svg#monochrome");
+	-webkit-filter: url("/images/filter.svg#monochrome");*/
+}